Car-truck.



c. s. WALTON.

CAR TRUCK.

APPLICATION FILED JAN-6. 1917.

ETI-

l I I Patented Aug. 28, 1917.

C. S. WALTON.

CAR TRUCK. I APPLICATION FILED JAN-6.1917- Patented Aug. 28, 1917.

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onAnLns s. WALTON; or CHICAGO, ILLINOIS, ASSIGNOR '10 STANDARD can TRUCKCOMPANY, or CHICAGO, ILL noIs, A conronarronor new anasny.

GAR-TRUCK.

resents.

Specification of Letters Patent.

Patented Aug. 28, 191% 1 Application filed January 6, 1917. Serial No.141,009.

To all whom it may concern."

Be it known that I, CHARLES S. WALTON,

I a citizen of the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Car-Trucks; and I do hereby declare the following to bea full,

. clear, and exact description. of the invention,

. such as will enable others skilled in the art to which it appertainsto make and use the same. 7

My invention relates to improvements in car trucks, and particularly tosix-wheeled equalized car trucks. To the above end, generally stated,the invention consists of the novel devices and combinations of deviceshereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referringto the drawings, 1 Figure 1 is a side elevation of the improvedcar truck with some parts sectioned on the line 11 of Fig. 2;

Fig. 2 is a fragmentary plan view Fig. 3 is a view in transverseSGClZlOIlWltll the left hand portion of the view sectioned on the line3-3 and the right hand portion thereof sectioned on the line of Fig. 1,

on an enlarged scale; and

Fig. 4: is a fragmentary detail view in end i elevation.

Each side frame of the improvedcar truck is indicated by the numeral 5and, as

shown, is of cast steel with a general cross section in the form of abox, the walls of which are suitably reinforced. I Qpenings are formedin the side frames 5 to permit casting thereof and for the sake of lightness. Rigidly bolted to the under side of the side frames 5, are threepairs of longitudinally spaced pedestals 6, each pair of which has its.lower-end connected by a tie bar 7.1 45.

The wheels, axles and journal boxes are indicated, respectively, by thenumerals 8, 9,

, and 10. The journalboxes 10 are guided by the pedestals 6, in thecustomary manner,

-with freedom for vertical movement with respect to the side frames.Over each journal box 10,.the side frames. 5 are cut away to affordadditional clearance therefor.

Between the wheels 8, the side frames 5 are dropped at 11 and formedwiththe opening 12, having in their top portions bolster and spring capguides 13. The lower portions of the opening are expanded to permitspring caps 14, of lateral motion devices, to be applied in workingposition between the guides 13 or removed therefrom. The ends of channelspring planks 15 are inserted in the openings 12, rest on the lowermembers of the dropped portions 11 of the side frames 5 and are rivetedthereto with their flanges turned upward. These spring planks 15 rigidlyconnect the side frames 5 and hold inserted through the openings 12,between the guides 13, and are provided with vertical stop flanges 18arranged to engage the inner faces of the side frames .5 and limit thelateral movement of the bolster 17. Anti-friction lateral motiondevices, of which the spring caps 1a form a part, rest on the springs l6and support the bolster 17 therefrom. These lateral motion devices, inaddition to. the spring caps 14, comprise contours 19 formed in theunder sides of the bolster 17 to receive rollers 20,. which, in turn,aremounted in contours 21 formed in :the spring caps 14. These springcaps 14.

are notched in the customary manner to receive the guides 13. The twomembers of the double truck bolster 17 are rigidly connected by anH-shaped casting 22 which carries. a center plate 23.

The side frames 5, at their ends, are rigidly connected by cast tie bars2 1 which, as

shown, are riveted to the under surfaces thereof. Cast integral withthese tie bars 24: and with the side frames 5, are brake hangers 25.Supported on the outer ends of the truck bolster 17 and bolted thereto,are arch bars 26 which carry side bearings, not shown, of the usual orany desired construction.

The side frames 5 are supported from the journal boxes 10 bysemi-elliptical springs 27 mounted on spring bases 28 which, in turn,rest directly on the tops of said jourjecting trunnions 37 mounted insegmental nal boxes. These spring bases 28 are held on the ournal boxesagainst longitudinal movement, with respect to the side frames 5, byribs 29 cast with the tops of said journal boxes and which fit ingrooves 30 formed in the bottoms of the spring bases. The outer ends ofthe outer springs 27 are con nected to the side frames 5 by links 31having apertures in their upper ends, through which the respective endsof the springs 27 extend, and having on their lower ends oppositelyprojecting trunnions 32, which are mounted in segmental seats 33 formedwith the walls of the side frames 5.

The inner ends of the outer springs 27 are connected to the endsof theintermediate springs 27 by equalizers comprising links 34, bell-cranklevers 35 and compression bars or members 36. The bell-crank levers35have horizontally and vertically disposed arms and are provided withoppositely proseats 38 formed with the walls of the side frames 5. Thehorizontal armsof the bellcrank levers 35 underlie the inner ends oftheouter springs 27 and the ends of the intermediate springs 27 and areconnected thereto by the links 34. The compression members'36 extendover theme-mbers of the bolster l7 and connect the vertical arms ofsockets 41 to receive the rounded ends of the vertical arms ofthebell-crank levers 35.

Obviously, the links 31 and 34:, bell-crank levers 35 and compressionmembers 36,'flexibly connected as above described, are free formovements longitudlnally with respect to the side frames 5.

From the above description, it is evident that the journal boxes 10 aremounted for free and independent vertical movement, with respect to eachother, and without a direct movement given to the truck frame itself. Itis also evident that the load of the car is directly on the doublebolster and it, in turn, is supported from the sideframes by theanti-friction lateral motion bearing devices and springs 16. The weighton the side frames 5 is distributed on the journal boxes 10 through thesprings 27 and equalizers.

\ It is, of course, understood that the side frames may be of structuralsteel, instead 2 "of cast steel as shown;

ave-a 1. a car triikf'the emanation with the side frames, a bolster andjournal boxes, of means supporting the side frames on the journal boxes,including leaf springs, bell crank levers havinglone of their armsconnected to said springs, and compression 7 members over the bolsterand connecting the other arms of said levers. l

2. In a six-wheeled car truck, the combination with side frames, adouble bolster and journal boxes, of leaf springs seatedon the journalboxes, abutments between the outer ends ofthe outer springs and the sideframes, pairs of bell'crank levers fulcrumed on the side' frames betweenthe'journal boxes and ends of the bolster and having horizontally andvertically disposed arms, the former ofwhich are connected to the innerends of the outer springs and the ends of the intermediate springs, anda compression member connecting the vertical arms of each pair ofbell-crank levers.

3. In a six-wheeled car truck, the combination with side frames, adouble bolster and journal boxes, of leaf springs seated on the journalboxes, abutments between the outer ends of the outer springs and theside frames, pairs of bell-crank levers fulcrumed on the side framesbetween the journal boxes and ends of the bolster and havinghorizonta'lly and vertically disposed arms, a compression memberconnecting the vertical arms of each pair of bell-crank levers, and

links connecting the horizontal arms of the bell-crank levers to theinner ends of the outer springs and to the ends of the intermediatesprings. v i

4:. In a'six-wheeled car truck, the combination with side frames, adouble bolster and journal boxes, of leaf springs seated on the journalboxes, links pivotally connecting the outer ends of the outer springs tothe side frames, pairs of bell-crank levers ful crumed on the sideframes between the journal boxes and ends of the bolster and havinghorizontally andvertically disposed'ar'ms, links connecting thehorizontal arms of saidlevers to the inner ends of the outer springs andto the ends of the intermediatesprings, and a compression memberconnecting the vertical arms ofeachpair of bell-crank levers.

5. In a six-wheeled car truck, the combination with side frames [andjournal boxes, of a double bolster having its end portions supportedfrom the side frames at points between the journal boxes, leafspringsseat ed on the journal boxes, abutments between the outer ends oftheouter springs and side frames, bell-crank levers fulcrumed on theside frames between the journal boxes and the end portions of thebolster andhaving horizontally and vertically disposed arms, saidhorizontal arms beingconnected' to the inner ends of the outer-springsto the levers on opposite sides of the end portions of the bolster inpairs.

6. In a six-wheeled car truck, the combination with side frames andjournal boxes, of a double bolster having its end portions supportedfrom the side frames at points between the journal boxes, leaf springsseated on the journal boxes, abutments between the outer ends of theouter springs and side frames, bell-crank levers fulcrumed on the sideframes between the journal boxes and the end portions of the bolster andhaving horizontally and vertically disposed arms, said horizontal armsextending under the inner ends of the outer springs and the ends of theintermediate springs, links connecting said horizontal arms withv theoverlying ends of said springs, and compression members extending overthe bolsters and con necting the vertical arms to the bell-crank leverslocated on opposite sides thereof in pairs.

7 In a six-wheeled car truck, the combination with side frames andjournal boxes, said side frames having integrally formed droppedportions between the journal boxes within which are formed bolsteropenings, of a double bolster having its ends mounted in said bolsteropenings and spring-supported from the side frames, and springs andequalizers supporting the side frames from the journal boxes.

8. In a six-wheeled car truck, the combination with side frames andjournal boxes,

said side frames having integrally formed dropped portions between thejournal boxes within which are formed bolster openings, of a doublebolster having its ends mounted in said bolster openings, springssupporting the bolster from the side frames, anti-fric- CHARLES S.WALTON. Witnesses F. L. BARBER, E. W. WEBB,

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents.

Washington, D. 0.

